Bolt VM-160 LED Macro Ring Light Guide Number: 69' / 21 m at ISO 100 | Eighteen High-Output LEDs | Six Levels of Brightness Adjustment Continuous Light & Flash Modes | Left & Right Only Illumination Modes | 1.6" Backlit LCD Display Clear, Frosted, Blue, & Amber Diffusers | Eight Adapter Rings from 49-77mm | Stand/Tripod Mount Included Runs on 4 AA Batteries 4 x Diffusers (Clear, Frosted White, Blue, Amber), 8 x Adapter Rings (49, 52, 55, 58, 62, 67, 72, and 77mm), Stand/Tripod Mount, Limited 1-Year Warranty